/*
 * Copyright (C) 2011 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.dx.gen;

import java.util.Arrays;
import java.util.Collections;
import java.util.List;

import com.android.dx.rop.type.StdTypeList;

/**
 * An immutable of types.
 */
final class TypeList {

	final Type<?>[] types;
	final StdTypeList ropTypes;

	TypeList(Type<?>[] types) {
		this.types = types.clone();
		this.ropTypes = new StdTypeList(types.length);
		for (int i = 0; i < types.length; i++) {
			ropTypes.set(i, types[i].ropType);
		}
	}

	/**
	 * Returns an immutable list.
	 */
	public List<Type<?>> asList() {
		return Collections.unmodifiableList(Arrays.asList(types));
	}

	@Override
	public boolean equals(Object o) {
		return o instanceof TypeList
				&& Arrays.equals(((TypeList) o).types, types);
	}

	@Override
	public int hashCode() {
		return Arrays.hashCode(types);
	}

	@Override
	public String toString() {
		StringBuilder result = new StringBuilder();
		for (int i = 0; i < types.length; i++) {
			if (i > 0) {
				result.append(", ");
			}
			result.append(types[i]);
		}
		return result.toString();
	}
}
